期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 33, 期 23, 页码 6886-6895出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2008.09.014
关键词
Optical fiber; Phototrophic hydrogen production; Photobioreactor design; Rhodopseudomonas palustris; Solar energy
资金
- National Science Council of Taiwan [NSC-93-2211-E-006-040, NSC 94-2211-E-006-026, NSC 95-2221-E-006164-MY3]
- Bureau of Energy of Taiwan [95-ET-7-006-004-ET, 96-ET-7-006-004-ET]
A novel solar-energy-excited optical fiber (SEEOF) photobioreactor (PBR) was developed to enhance the phototrophic H-2 production by Rhodopseudomonas palustris WP3-S using acetate (HAc) as the sole carbon source. The PBR was illuminated by combinative light sources, including an internal illumination with optical fiber excited by solar energy (OF(sunlight)) as well as external irradiation of tungsten filament lamp (TL). The photo-H-2 producing performance of the SEEOF photobioreactor was further improved by using an innovative light dependent resistor (LDR) system, which could maintain sufficient and continual light supply. The results show that combination of OF(sunlight)/TL was more effective than the TUTL illumination system, leading to a 138% and 136% increase in cumulative H-2 production (V-H2) and H-2 yield (Y-H2), respectively. The LDR-coupled SEEOF photobioreactor was able to solve the problems of diurnal variation in solar light intensity, enabling the control of a constant total light irradiation intensity on the PBR surface. Combining OF(sunlight)/TL with LDR, the V-H2 and Y-H2 were nearly 27% higher than without LDR. For bioreactor scale up from 50 to 1800 ml working volume, the LDR-coupled SEEOF photobioreactor worked well during daytime, leading to a marked improvement in phototrophic H-2 production with a V-H2 and Y-H2 of 3606 ml and 2.45 mol H-2/mol HAc, respectively. Moreover, continuous cultures operated at a hydraulic retention time (HRT) of 48 h show a high hydrogen production rate of 32.4 ml/1/h with stable operation for over 15 days. This optimal performance of LDR-coupled SEEOF photobioreactor is superior to most reported results and is a favorable choice of electricity-saving PBR strategy to improve photo-H-2 production efficiency. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据